68728640

素因数分解:

$2^6\times 5^1\times {\mathrm{397}}^1\times {\mathrm{541}}^1$

素因数の和:955

約数の個数: 56

約数和(自身を含む): 164375592

約数和(自身を除く): 95646952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 397, 541, 794, 1082, 1588, 1985, 2164, 2705, 3176, 3970, 4328, 5410, 6352, 7940, 8656, 10820, 12704, 15880, 17312, 21640, 25408, 31760, 34624, 43280, 63520, 86560, 127040, 173120, 214777, 429554, 859108, 1073885, 1718216, 2147770, 3436432, 4295540, 6872864, 8591080, 13745728, 17182160, 34364320, 68728640]

約数ペア:

[(1, 68728640), (2, 34364320), (4, 17182160), (5, 13745728), (8, 8591080), (10, 6872864), (16, 4295540), (20, 3436432), (32, 2147770), (40, 1718216), (64, 1073885), (80, 859108), (160, 429554), (320, 214777), (397, 173120), (541, 127040), (794, 86560), (1082, 63520), (1588, 43280), (1985, 34624), (2164, 31760), (2705, 25408), (3176, 21640), (3970, 17312), (4328, 15880), (5410, 12704), (6352, 10820), (7940, 8656)]